[Maintenance] Add filterwarnings("error") to test_func_utils (refs #6408)Add filterwarnings(error) to test_func_utils and fix deprecated warni…

[skysabarre]

…ng handling

Description

<Adds pytestmark = pytest.mark.filterwarnings("error") to tests/test_func_utils.py as part of the ongoing effort to catch unexpected warnings across the test suite.

This surfaces that tests calling pm.find_constrained_prior were not handling its FutureWarning (the function is deprecated in favor of PreliZ's maxent). Fixed by wrapping calls in pytest.warns(FutureWarning) and using warnings.catch_warnings() to suppress unrelated PyTensor UserWarnings from loop fusion. -->

Related Issue

• Closes #
• Related to $6408

Checklist

• Checked that the pre-commit linting/style checks pass
• Included tests that prove the fix is effective or that the new feature works
• Added necessary documentation (docstrings and/or example notebooks)
• If you are a pro: each commit corresponds to a relevant logical change

Type of change

• New feature / enhancement
• Bug fix
• Documentation
• Maintenance
• Other (please specify):

[read-the-docs-community]

Documentation build overview

📚 pymc | 🛠️ Build #32013454 | 📁 Comparing 08370bd against latest (0f5c0ca)

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Show files changed (24 files in total): 📝 24 modified | ➕ 0 added | ➖ 0 deleted

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